Yang Tae-Ho, Oh Sun-Young
Department of Neurology (T-HY), Chonbuk National University School of Medicine; and Department of Neurology (S-YO), Chonbuk National University, Research Institute of Clinical Medicine, Chonbuk National University Hospital, Jeonju, South Korea.
J Neuroophthalmol. 2014 Jun;34(2):159-61. doi: 10.1097/WNO.0000000000000094.
Central vestibular lesions may cause paroxysmal positional nystagmus (PPN) or paroxysmal positional vertigo as a result of lesions involving the brainstem dorsolateral to the fourth ventricle or the cerebellar nodulus/uvular region. PPN usually presents as persistent downbeating nystagmus during head hanging or as apogeotropic horizontal nystagmus during head turning in the supine position. Geotropic PPN during head turning in the supine position has not been previously reported. We report such a case in a patient with HIV encephalopathy.
由于病变累及第四脑室背外侧的脑干或小脑小结/蚓垂区域，中枢性前庭病变可能导致阵发性位置性眼球震颤（PPN）或阵发性位置性眩晕。PPN通常表现为头部下垂时持续的下跳性眼球震颤，或仰卧位转头时的背地性水平眼球震颤。仰卧位转头时的向地性PPN此前尚未见报道。我们报告了一例患有HIV脑病患者出现这种情况的病例。
